1 #ifndef _LINUX_SOCKET_H 2 #define _LINUX_SOCKET_H 3 4 /* 5 * Desired design of maximum size and alignment (see RFC2553) 6 */ 7 #define _K_SS_MAXSIZE 128 /* Implementation specific max size */ 8 #define _K_SS_ALIGNSIZE (__alignof__ (struct sockaddr *)) 9 /* Implementation specific desired alignment */ 10 11 struct __kernel_sockaddr_storage { 12 unsigned short ss_family; /* address family */ 13 /* Following field(s) are implementation specific */ 14 char __data[_K_SS_MAXSIZE - sizeof(unsigned short)]; 15 /* space to achieve desired size, */ 16 /* _SS_MAXSIZE value minus size of ss_family */ 17 } __attribute__ ((aligned(_K_SS_ALIGNSIZE))); /* force desired alignment */ 18 19 #ifdef __KERNEL__ 20 21 #include <asm/socket.h> /* arch-dependent defines */ 22 #include <linux/sockios.h> /* the SIOCxxx I/O controls */ 23 #include <linux/uio.h> /* iovec support */ 24 #include <linux/types.h> /* pid_t */ 25 #include <linux/compiler.h> /* __user */ 26 27 #ifdef __KERNEL__ 28 # ifdef CONFIG_PROC_FS 29 struct seq_file; 30 extern void socket_seq_show(struct seq_file *seq); 31 # endif 32 #endif /* __KERNEL__ */ 33 34 typedef unsigned short sa_family_t; 35 36 /* 37 * 1003.1g requires sa_family_t and that sa_data is char. 38 */ 39 40 struct sockaddr { 41 sa_family_t sa_family; /* address family, AF_xxx */ 42 char sa_data[14]; /* 14 bytes of protocol address */ 43 }; 44 45 struct linger { 46 int l_onoff; /* Linger active */ 47 int l_linger; /* How long to linger for */ 48 }; 49 50 #define sockaddr_storage __kernel_sockaddr_storage 51 52 /* 53 * As we do 4.4BSD message passing we use a 4.4BSD message passing 54 * system, not 4.3. Thus msg_accrights(len) are now missing. They 55 * belong in an obscure libc emulation or the bin. 56 */ 57 58 struct msghdr { 59 void * msg_name; /* Socket name */ 60 int msg_namelen; /* Length of name */ 61 struct iovec * msg_iov; /* Data blocks */ 62 __kernel_size_t msg_iovlen; /* Number of blocks */ 63 void * msg_control; /* Per protocol magic (eg BSD file descriptor passing) */ 64 __kernel_size_t msg_controllen; /* Length of cmsg list */ 65 unsigned msg_flags; 66 }; 67 68 /* 69 * POSIX 1003.1g - ancillary data object information 70 * Ancillary data consits of a sequence of pairs of 71 * (cmsghdr, cmsg_data[]) 72 */ 73 74 struct cmsghdr { 75 __kernel_size_t cmsg_len; /* data byte count, including hdr */ 76 int cmsg_level; /* originating protocol */ 77 int cmsg_type; /* protocol-specific type */ 78 }; 79 80 /* 81 * Ancilliary data object information MACROS 82 * Table 5-14 of POSIX 1003.1g 83 */ 84 85 #define __CMSG_NXTHDR(ctl, len, cmsg) __cmsg_nxthdr((ctl),(len),(cmsg)) 86 #define CMSG_NXTHDR(mhdr, cmsg) cmsg_nxthdr((mhdr), (cmsg)) 87 88 #define CMSG_ALIGN(len) ( ((len)+sizeof(long)-1) & ~(sizeof(long)-1) ) 89 90 #define CMSG_DATA(cmsg) ((void *)((char *)(cmsg) + CMSG_ALIGN(sizeof(struct cmsghdr)))) 91 #define CMSG_SPACE(len) (CMSG_ALIGN(sizeof(struct cmsghdr)) + CMSG_ALIGN(len)) 92 #define CMSG_LEN(len) (CMSG_ALIGN(sizeof(struct cmsghdr)) + (len)) 93 94 #define __CMSG_FIRSTHDR(ctl,len) ((len) >= sizeof(struct cmsghdr) ? \ 95 (struct cmsghdr *)(ctl) : \ 96 (struct cmsghdr *)NULL) 97 #define CMSG_FIRSTHDR(msg) __CMSG_FIRSTHDR((msg)->msg_control, (msg)->msg_controllen) 98 #define CMSG_OK(mhdr, cmsg) ((cmsg)->cmsg_len >= sizeof(struct cmsghdr) && \ 99 (cmsg)->cmsg_len <= (unsigned long) \ 100 ((mhdr)->msg_controllen - \ 101 ((char *)(cmsg) - (char *)(mhdr)->msg_control))) 102 103 /* 104 * Get the next cmsg header 105 * 106 * PLEASE, do not touch this function. If you think, that it is 107 * incorrect, grep kernel sources and think about consequences 108 * before trying to improve it. 109 * 110 * Now it always returns valid, not truncated ancillary object 111 * HEADER. But caller still MUST check, that cmsg->cmsg_len is 112 * inside range, given by msg->msg_controllen before using 113 * ancillary object DATA. --ANK (980731) 114 */ 115 116 static inline struct cmsghdr * __cmsg_nxthdr(void *__ctl, __kernel_size_t __size, 117 struct cmsghdr *__cmsg) 118 { 119 struct cmsghdr * __ptr; 120 121 __ptr = (struct cmsghdr*)(((unsigned char *) __cmsg) + CMSG_ALIGN(__cmsg->cmsg_len)); 122 if ((unsigned long)((char*)(__ptr+1) - (char *) __ctl) > __size) 123 return (struct cmsghdr *)0; 124 125 return __ptr; 126 } 127 128 static inline struct cmsghdr * cmsg_nxthdr (struct msghdr *__msg, struct cmsghdr *__cmsg) 129 { 130 return __cmsg_nxthdr(__msg->msg_control, __msg->msg_controllen, __cmsg); 131 } 132 133 /* "Socket"-level control message types: */ 134 135 #define SCM_RIGHTS 0x01 /* rw: access rights (array of int) */ 136 #define SCM_CREDENTIALS 0x02 /* rw: struct ucred */ 137 #define SCM_SECURITY 0x03 /* rw: security label */ 138 139 struct ucred { 140 __u32 pid; 141 __u32 uid; 142 __u32 gid; 143 }; 144 145 /* Supported address families. */ 146 #define AF_UNSPEC 0 147 #define AF_UNIX 1 /* Unix domain sockets */ 148 #define AF_LOCAL 1 /* POSIX name for AF_UNIX */ 149 #define AF_INET 2 /* Internet IP Protocol */ 150 #define AF_AX25 3 /* Amateur Radio AX.25 */ 151 #define AF_IPX 4 /* Novell IPX */ 152 #define AF_APPLETALK 5 /* AppleTalk DDP */ 153 #define AF_NETROM 6 /* Amateur Radio NET/ROM */ 154 #define AF_BRIDGE 7 /* Multiprotocol bridge */ 155 #define AF_ATMPVC 8 /* ATM PVCs */ 156 #define AF_X25 9 /* Reserved for X.25 project */ 157 #define AF_INET6 10 /* IP version 6 */ 158 #define AF_ROSE 11 /* Amateur Radio X.25 PLP */ 159 #define AF_DECnet 12 /* Reserved for DECnet project */ 160 #define AF_NETBEUI 13 /* Reserved for 802.2LLC project*/ 161 #define AF_SECURITY 14 /* Security callback pseudo AF */ 162 #define AF_KEY 15 /* PF_KEY key management API */ 163 #define AF_NETLINK 16 164 #define AF_ROUTE AF_NETLINK /* Alias to emulate 4.4BSD */ 165 #define AF_PACKET 17 /* Packet family */ 166 #define AF_ASH 18 /* Ash */ 167 #define AF_ECONET 19 /* Acorn Econet */ 168 #define AF_ATMSVC 20 /* ATM SVCs */ 169 #define AF_RDS 21 /* RDS sockets */ 170 #define AF_SNA 22 /* Linux SNA Project (nutters!) */ 171 #define AF_IRDA 23 /* IRDA sockets */ 172 #define AF_PPPOX 24 /* PPPoX sockets */ 173 #define AF_WANPIPE 25 /* Wanpipe API Sockets */ 174 #define AF_LLC 26 /* Linux LLC */ 175 #define AF_CAN 29 /* Controller Area Network */ 176 #define AF_TIPC 30 /* TIPC sockets */ 177 #define AF_BLUETOOTH 31 /* Bluetooth sockets */ 178 #define AF_IUCV 32 /* IUCV sockets */ 179 #define AF_RXRPC 33 /* RxRPC sockets */ 180 #define AF_ISDN 34 /* mISDN sockets */ 181 #define AF_PHONET 35 /* Phonet sockets */ 182 #define AF_IEEE802154 36 /* IEEE802154 sockets */ 183 #define AF_MAX 37 /* For now.. */ 184 185 /* Protocol families, same as address families. */ 186 #define PF_UNSPEC AF_UNSPEC 187 #define PF_UNIX AF_UNIX 188 #define PF_LOCAL AF_LOCAL 189 #define PF_INET AF_INET 190 #define PF_AX25 AF_AX25 191 #define PF_IPX AF_IPX 192 #define PF_APPLETALK AF_APPLETALK 193 #define PF_NETROM AF_NETROM 194 #define PF_BRIDGE AF_BRIDGE 195 #define PF_ATMPVC AF_ATMPVC 196 #define PF_X25 AF_X25 197 #define PF_INET6 AF_INET6 198 #define PF_ROSE AF_ROSE 199 #define PF_DECnet AF_DECnet 200 #define PF_NETBEUI AF_NETBEUI 201 #define PF_SECURITY AF_SECURITY 202 #define PF_KEY AF_KEY 203 #define PF_NETLINK AF_NETLINK 204 #define PF_ROUTE AF_ROUTE 205 #define PF_PACKET AF_PACKET 206 #define PF_ASH AF_ASH 207 #define PF_ECONET AF_ECONET 208 #define PF_ATMSVC AF_ATMSVC 209 #define PF_RDS AF_RDS 210 #define PF_SNA AF_SNA 211 #define PF_IRDA AF_IRDA 212 #define PF_PPPOX AF_PPPOX 213 #define PF_WANPIPE AF_WANPIPE 214 #define PF_LLC AF_LLC 215 #define PF_CAN AF_CAN 216 #define PF_TIPC AF_TIPC 217 #define PF_BLUETOOTH AF_BLUETOOTH 218 #define PF_IUCV AF_IUCV 219 #define PF_RXRPC AF_RXRPC 220 #define PF_ISDN AF_ISDN 221 #define PF_PHONET AF_PHONET 222 #define PF_IEEE802154 AF_IEEE802154 223 #define PF_MAX AF_MAX 224 225 /* Maximum queue length specifiable by listen. */ 226 #define SOMAXCONN 128 227 228 /* Flags we can use with send/ and recv. 229 Added those for 1003.1g not all are supported yet 230 */ 231 232 #define MSG_OOB 1 233 #define MSG_PEEK 2 234 #define MSG_DONTROUTE 4 235 #define MSG_TRYHARD 4 /* Synonym for MSG_DONTROUTE for DECnet */ 236 #define MSG_CTRUNC 8 237 #define MSG_PROBE 0x10 /* Do not send. Only probe path f.e. for MTU */ 238 #define MSG_TRUNC 0x20 239 #define MSG_DONTWAIT 0x40 /* Nonblocking io */ 240 #define MSG_EOR 0x80 /* End of record */ 241 #define MSG_WAITALL 0x100 /* Wait for a full request */ 242 #define MSG_FIN 0x200 243 #define MSG_SYN 0x400 244 #define MSG_CONFIRM 0x800 /* Confirm path validity */ 245 #define MSG_RST 0x1000 246 #define MSG_ERRQUEUE 0x2000 /* Fetch message from error queue */ 247 #define MSG_NOSIGNAL 0x4000 /* Do not generate SIGPIPE */ 248 #define MSG_MORE 0x8000 /* Sender will send more */ 249 250 #define MSG_EOF MSG_FIN 251 252 #define MSG_CMSG_CLOEXEC 0x40000000 /* Set close_on_exit for file 253 descriptor received through 254 SCM_RIGHTS */ 255 #if defined(CONFIG_COMPAT) 256 #define MSG_CMSG_COMPAT 0x80000000 /* This message needs 32 bit fixups */ 257 #else 258 #define MSG_CMSG_COMPAT 0 /* We never have 32 bit fixups */ 259 #endif 260 261 262 /* Setsockoptions(2) level. Thanks to BSD these must match IPPROTO_xxx */ 263 #define SOL_IP 0 264 /* #define SOL_ICMP 1 No-no-no! Due to Linux :-) we cannot use SOL_ICMP=1 */ 265 #define SOL_TCP 6 266 #define SOL_UDP 17 267 #define SOL_IPV6 41 268 #define SOL_ICMPV6 58 269 #define SOL_SCTP 132 270 #define SOL_UDPLITE 136 /* UDP-Lite (RFC 3828) */ 271 #define SOL_RAW 255 272 #define SOL_IPX 256 273 #define SOL_AX25 257 274 #define SOL_ATALK 258 275 #define SOL_NETROM 259 276 #define SOL_ROSE 260 277 #define SOL_DECNET 261 278 #define SOL_X25 262 279 #define SOL_PACKET 263 280 #define SOL_ATM 264 /* ATM layer (cell level) */ 281 #define SOL_AAL 265 /* ATM Adaption Layer (packet level) */ 282 #define SOL_IRDA 266 283 #define SOL_NETBEUI 267 284 #define SOL_LLC 268 285 #define SOL_DCCP 269 286 #define SOL_NETLINK 270 287 #define SOL_TIPC 271 288 #define SOL_RXRPC 272 289 #define SOL_PPPOL2TP 273 290 #define SOL_BLUETOOTH 274 291 #define SOL_PNPIPE 275 292 #define SOL_RDS 276 293 #define SOL_IUCV 277 294 295 /* IPX options */ 296 #define IPX_TYPE 1 297 298 #ifdef __KERNEL__ 299 extern int memcpy_fromiovec(unsigned char *kdata, struct iovec *iov, int len); 300 extern int memcpy_fromiovecend(unsigned char *kdata, const struct iovec *iov, 301 int offset, int len); 302 extern int csum_partial_copy_fromiovecend(unsigned char *kdata, 303 struct iovec *iov, 304 int offset, 305 unsigned int len, __wsum *csump); 306 307 extern int verify_iovec(struct msghdr *m, struct iovec *iov, struct sockaddr *address, int mode); 308 extern int memcpy_toiovec(struct iovec *v, unsigned char *kdata, int len); 309 extern int memcpy_toiovecend(const struct iovec *v, unsigned char *kdata, 310 int offset, int len); 311 extern int move_addr_to_user(struct sockaddr *kaddr, int klen, void __user *uaddr, int __user *ulen); 312 extern int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr *kaddr); 313 extern int put_cmsg(struct msghdr*, int level, int type, int len, void *data); 314 315 #endif 316 #endif /* not kernel and not glibc */ 317 #endif /* _LINUX_SOCKET_H */ 318